Certain regional stereotypes have long since become cliches: The stressed-out New Yorker. The laid-back Californian.

But the conscientious Floridian? The neurotic Kentuckian?

You bet -- at least, according to new research on the geography of personality. Based on more than 600,000 questionnaires and published in the journal Perspectives on Psychological Science, the study maps regional clusters of personality traits, then overlays state-by-state data on crime, health and economic development in search of correlations.

Even after controlling for variables such as race, income and education levels, a state's dominant personality turns out to be strongly linked to certain outcomes. Amiable states, like Minnesota, tend to be lower in crime. Dutiful states -- an eclectic bunch that includes New Mexico, North Carolina and Utah -- produce a disproportionate share of mathematicians. States that rank high in openness to new ideas are quite creative, as measured by per-capita patent production. But they're also high-crime and a bit aloof. Apparently, Californians don't much like socializing, the research suggests.